Under 25 73 or older Have not had a physical exam in the past 5 years which included a genital exam Any condition where sex is not advised Taking the medicine nitroglycerin or other medicines that contain nitrates Don’t know your blood pressure Low blood pressure or unexplained fainting or dizziness Kidney disease Physical abnormality of the penis, including Peyronie’s disease Your assigned birth sex is female Delivery Services. It depends on the platform and insurance provider. More serious side effects may include a drop in blood pressure or an erection that lasts longer than four hours. Some services offer a subscription option where they’ll send your medications every month at a discount. Levitra vardenafil : This medication is taken one hour before sex and can last up to 24 hours.Viagra vs Cialis? About 75 to 85 percent of the time both Viagra and Cialis are effective drugs for erectile dysfunction. Do not start, stop, or change the dosage of any . Viagra is only available with a doctor’s prescription. Keeping Viagra as a prescription-only medication is for the safety of the person using this medication. ED can be brought about due to other diseases, so having a thorough evaluation with a physician may help you get to the root of the problem. People See more. Best Low Cost: GoodRx Fastest Delivery: Blink Health: Sesame Sign Up Now Key Specs Cost: Consultation prices vary based on the prescriber; $5 generic .